Wimbledon (NBC, 1-5 p.m. and 12:50-2:50 a.m.): Women's semifinals from the All England Lawn Tennis & Croquet Club in London.
Alive TV (PBS, 10-10:30 p.m.): In case you doubted there was such a thing as TV with a difference - or that TV's summer doldrums were inescapable - note this contrarian little series beginning its ninth season of short works by independent filmmakers. It started life in 1985 as "Alive From Off Center," featuring mainly performance art, dance, and video. These days it offers films - definitely untypical ones at times - that deal, one way or another, with the concept of family, its producers say. The opene r - "A Short Film Festival for Television" - comprises four shorts that are not likely to be confused with "The Cosby Show." The first, "Fugitive Love," focuses on a girl who is jilted by her boyfriend and looks for solace from family members. "Sour Death Balls" seeks comic effects with the reactions of people trying a fiercely sour candy. "Angry" is about a girl trying to find love in the wrong places. And "Television, The Drug of the Nation" is an offbeat critique of the tube today. * FRIDAY
The Next American
Century: What Will It Take? (Public stations - check local listings for times): A promising mix of working executives and economic thinkers appears on this roundtable discussion focusing on how the United States can remain No. 1 in the long-term future. Co-produced by TV's "Nightly Business Report" and Fortune magazine, the program brings together the CEOs of MCI Communications, General Instrument, Goodyear, and Warnbaco. On the academic side, it includes Lester Thurow, dean of MIT's Sloan School of Mana gement, and as the consumer's voice, Ralph Nader is present. Moderating the panel are Marshall Loeb, Fortune's managing editor, and Linda O'Bryon, executive editor of "The Nightly Business Report."
Please check local listings for these programs, especially the one on public TV.